Steam or hot-water heater



(No Model.) 2 SheetsSheet 1.

A. B. MARSHALL.

STEAM 0R HOT WATER HEATER.

No. 600,267. Patented Mar. 8,1898.

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(No Mo el.) 2 Sheets-Sheet 2.

A. B. MARSHALL.

STEAM 0R HOT WATER HEATER.

No. 600,267. Patented Mar. 8, 1898.

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UNrrnn STATES AQUILA B. MARSHALL, OF NElV YORK, N. Y., ASSIGNOR TO THE BOYNTON FURNACE COMPANY, OF NEW YORK.

STEAM OR HOT-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 600,267, dated March 8, 1898.

Application filed November 12, 1897. Serial No. 658,247. (No model.)

To aZZ whom it may concern: tween which and the fire-pot is a deflector 15, Be it known that I, AQUILA B. MARSHALL, formed like the wall of the fire-pot and the of New York, in the county and State of New smoke-flue, this wall being hollow to provide York, have invented certain new and useful for the circulation of water and as it inclines Improvements in Steam or vVater Heaters, of forward it has a tendency to throw forward which the followingis a full, clear, and exact the products of combustion, which pass up description. through the fines in the sections above, which My invention relates to improvements in will be hereinafter referred to.

heaters; and the objects of my invention are Above and resting on the section 11 are to to produce a comparatively simple heater superposed sections 16 and 17 the body of the which is adapted to heat water for direct cirheater being formed of these sections 11, 16, culation or to convert it into steam, which is and 17; but it will of course be seen at once constructed so as to be very easily set up or that any necessary number of sections can be taken down, which has an extremely large used, this depending on the size and capacity I 5 heating-surface, to the end that much of the of the heater. The sections 16 and 17 are heat of combustion can be utilized for heatprovided with deflecting-plates 16 and 17, ing water, and which is constructed and arwhich extend transversely across the waterranged so as to have a circulation within itholding portions of the said sections and ocself and thus avoid to a great extent the cupy the front port-ion thereof, the deflecting- 20 difficultyin many heaters which have a tendplates being lowest at the front edges and inency to force the water from the heater into clining upward toward the rear, so as to asthe circulation-pipes. sist the circulation of water, as indicated by To these ends my invention consists of the arrows in Fig. 1 and as pointed out more a heater the construction and arrangement specifically hereinafter. 25 of which will be hereinafter described and The water-holding portions of the sections claimed. 16 and 17 do not connect at the rear, but con- Reference is to be had to the accompanying nect at the front only through the nipples 19, drawings, formingapart of this specification, and also connect through said nipples with in which similar figures of reference indicate the lower sect-ion 11 and With the dome 20, p

30 corresponding parts in all the views. which is also hollow-walled to contain water.

Figure 1 is a vertical section of my im- It will be seen by reference to Fig. 1 that this proved heater on the line 1 1 of Fig. 2. Fig. makes a connection between the several sec- 2 is a sectional plan on the line 2 2 of Fig. 1, tions of the boiler at the front only; but other and Fig. 3 is a sectional plan 011 the line 3 3 circulatory devices can be substituted for the 35 of Fig. 1. nipples shown, if preferred.

The heater has substantially the usual form The dome 20 is preferably of the usual of base 10, on which rests the bottom section rounding shape and rests on the section 17, 11 of the heater, this section being preferably the dome comprising an outer hollow ring of a generally cylindrical shape, although it 22, from which rises the water-legs 23, these 0 will of course be understood that the heater uniting at the center to connect with the outmay be given any preferred cross-sectional flow-pipe 26. The bottom of the smoke-chamshape without aifeoting the invention. This ber connects with the fire-pot 12 by the fines lower section 11 has an inner chamber 12, 21, which are preferably vertical and parallel forming the fire-pot,'and which has the usual and which pierce the sections 16 and 17, any

5 or any preferred form of grate. The section necessary number of these fines being made. 11, like the other sections to be referred to The sections 16 and 17 are also pierced by the presently, is hollow-walled, so that the water vertical smoke-flue 18, which connects with may surround the fire-pot, and it is pierced the flue 14.- above referred to, and the fiues with the usual door-opening 13 and has at 14 and 18 form a continuous line leading from 50 the back a portion of the smoke-fine 14, bethe dome 20 to the smoke-pipe 25; but, if desired, a direct connection between the dome and smoke'pipe can be made, as shown by dotted lines at 25 in Fig. 1.

The rear portion of the dome 20 connects by an outside water-leg 24 with the lower back part of the section 11,so that the only rear connection between the upper and lower waterholding sections of the heater is through this leg 24. Consequently it will be seen at once that the outside air will have a tendency to cool the leg, so that the water will be a few degrees cooler here than in the interior portions of the cylinder, and the cooler water will therefore descend through the leg 24: and pass into the section 11, from which, being heated around the fire-pot, it will rise through the lower nipple 19, through the section 16, being deflected by the plate 16 toward the back of the said section, then flow forward above the deflecting-plate, as shown by the arrow in Fig. 1, thence up through the second nipple 19 to the section 17, thence back upon the deflecting-plate 17 thence forward again to the upper nipple 19, thence through the ring 22 and water-legs 23 of the dome 20, and thence back through the waterleg 24:, thus keeping up the constant inner movement. The outflow is' through the pipe 26 and the return is through the pipe 2'7, connecting with the lower part of the section 11.

From the foregoing description it will be seen that this heater is very simple, that the sections going to make it up can be laid one on the other with great case, that an immense heating-surface is provided, thus affording economical heating of the water, and that a good means of inner circulation is provided.

Having thus described my invention, I claim as new anddesire to secure by Letters Patent- 1. An improved heater, comprising a lower hollow-Walled section containing a fire-pot, superposed water-holding sections above said lower section, the said sections being connected with each other and with the lower section at one side only of the heater, and an exterior Water-leg connecting the upper and lower sections at the opposite side of the heater, substantially as described.

2. An improved heater, comprising a lower water-holding section containing a fire-pot with a forwardly-deflecting inclined waterholding wall at the back of the fire-pot, su-

perposed water-holding sections mounted on the lower section and provided with smokeflues, suitable connections between the said sections, and a smoke-flue to carry off the products of combustion, substantially-as described.

3. An improved heater, comprising a lower water-holding section containing a fire-pot, superposed water-holding sections pierced with smoke-fines and mounted on the lower section, interior connections between the front portions of the several sections, an exterior connection between the upper and lower sections only, and interior deflectingplates in the said water-holding sections whereby the water is given a tortuous course through them, substantially as described.

4. In a heater, the combination of the upper and lower water-holding sections indepen dently connected, of the intermediate water-holding sections connected together and with the upper and lower sections to provide water circulation, and deflecting-plates in said intermediate sections arranged opposite the connections between the sections, substantially as described.

5. A heater of the kind described, comprising a lower water-holding section having a fire-pot, a rear smoke-flue and an inclined defiectin g hollow wall between the smoke-flue and fire-pot, superposed water-holding sections on the lower section, said sections having smoke-fines adapted to connect with the fire-pot and with the first-mentioned smokefiue, a water-dome on the said sections, water connections between the said sections and the water-dome, interior deflecting-plates arranged within the intermediate sections and opposite the water connections, and an exterior connection between the'water-dome and thelower section, substantially as described.

6. A heater, comprising a series of superposed independent water-holding sections having suitable connections for circulation and for draft, means for heating the water, connections within the sections between all the said sections, and an exterior connection between the upper and lower sections, substantially as described.

AQUILA B. MARSHALL. Witnesses:

J. A. E. CRIswELL, BERTHA DEYO. 

